Makes sense. I know many crews believed the curved cast hulls gave them a little more protection by the possibility of a shot glancing off it instead of the straight angled welded frontal armor. still just seems to be a fabrication / manufacturing nightmare.
The fact that the homogeneous cast armor had slight differences in its metallurgy than the homogeneous plate probably gave them some weld filler metal issues too. Can't be sure but it is always a possibility with specialty alloys.